diff --git a/Gemfile.lock b/Gemfile.lock
index 206789b6..ced508c0 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -42,8 +42,8 @@ GEM
       i18n (>= 0.7, < 2)
       minitest (~> 5.1)
       tzinfo (~> 1.1)
-    addressable (2.5.2)
-      public_suffix (>= 2.0.2, < 4.0)
+    addressable (2.8.1)
+      public_suffix (>= 2.0.2, < 6.0)
     airborne (0.2.13)
       activesupport
       rack
@@ -205,7 +205,7 @@ GEM
     pry (0.11.3)
       coderay (~> 1.1.0)
       method_source (~> 0.9.0)
-    public_suffix (3.0.0)
+    public_suffix (5.0.0)
     puma (3.9.1)
     rack (2.0.7)
     rack-accept (0.4.5)